Anthony Martial has been involved in a bust-up with a youth-team player that threatened to give Erik ten Hag another headache after the Cristiano Ronaldo saga.
The Manchester United boss was forced to temporarily halt a training session for non-World Cup players at Carrington on Wednesday. It's understood Martial - one of several senior players not involved in Qatar - was taking part in one of the final sessions before being given a break.
A number of youth-team stars were also drafted in by ten Hag to boost the numbers but events quickly spiralled out of control. It's believed Under-18 star Dan Gore, signed from Burnley last summer, clattered Martial with a robust tackle, which sparked an angry confrontation between the pair.